Optimal design of lattice wave digital fractional-order Butterworth filter

被引：2

作者：

Mahata, Shibendu ^{[1
]}

Kar, Rajib ^{[1
]}

Mandal, Durbadal ^{[1
]}

机构：

[1] Natl Inst Technol, Dept Elect & Commun Engn, Durgapur, India

来源：

INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS | 2021年 / 49卷 / 01期

关键词：

digital filter; fractional‐ order Butterworth filter; order filter; lattice wave digital filter; optimization;

D O I：

10.1002/cta.2902

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This letter presents the design of digital fractional-order Butterworth filter (DFOBF) of order (n+alpha), where n is an integer, and alpha is an element of (0,1), from the perspective of optimal realization. The magnitude-frequency characteristic of the DFOBF is optimally modeled using the computationally efficient lattice wave digital filters (LWDFs). Design examples for the third- and fifth-order LWDF-DFOBFs with various values of n, alpha(,) and cut-off frequencies are presented.

引用

页码：213 / 220

页数：8

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